assertion retraction graph subject predicate object datatype annotation 1 0 graph DOID:2639 IAO:0000115 A breast fibroadenoma that is characterized by stromal proliferation around epithelial structures. xsd:string "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007638""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://en.wikipedia.org/wiki/Fibroadenoma""}]}"